549247645 has 8 divisors (see below), whose sum is σ = 697867704. Its totient is φ = 413551104.

The previous prime is 549247607. The next prime is 549247651. The reversal of 549247645 is 546742945.

It can be written as a sum of positive squares in 4 ways, for example, as 166771396 + 382476249 = 12914^2 + 19557^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 549247645 - 2¹⁷ = 549116573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 549247595 and 549247604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3230784 + ... + 3230953.

It is an arithmetic number, because the mean of its divisors is an integer number (87233463).

Almost surely, 2^549247645 is an apocalyptic number.

It is an amenable number.

549247645 is a deficient number, since it is larger than the sum of its proper divisors (148620059).

549247645 is a wasteful number, since it uses less digits than its factorization.

549247645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6461759.

The product of its digits is 1209600, while the sum is 46.

The square root of 549247645 is about 23436.0330474251. The cubic root of 549247645 is about 818.9475119708.

The spelling of 549247645 in words is "five hundred forty-nine million, two hundred forty-seven thousand, six hundred forty-five".